光传送网低时延GMP映射方案设计及实现

Design and implementation of low-latency GMP mapper scheme in optical transport network

低时延性能是未来5G通信网络的一项核心技术指标,对光传送网通用映射规程(GMP)映射进行时延优化能够有效降低网络总时延。简要分析了光传送网中时延构成,阐述了GMP映射的一般原理,并提出了一种基于状态机自适应控制的GMP映射方案,通过快速自适应调整,最大限度地降低缓存深度,从而降低处理时延。仿真和实测证明,该方案可将GMP映射时延控制在50ns左右,对5G通信系统低时延设计具有极大应用价值。

Low-latency is one of the core technical indexes of 5 G communication network, and the latency optimization of optical transport network GMP mapping can effectively reduce the network latency. Firstly, the time delay in optical transmission network is briefly analyed, and then the general principles of GMP mapping is described, at last, a kind of GMP mapping scheme based on self-adaptive control state machine is proposed,which can minimize buffer depth by fast adaptive adjustment, then reduces processing latency. The simulation and measurement prove that this scheme can control the GMP mapping time delay to around 50 ns, which is of great value to the design of 5 G communication system low-latency.